WA Universal Desk Charger Walkers Specialty Accessori Colors Beige Saturation Sound Pressure Color:Blue Colors Beige Saturation Sound Pressure Level (SSPL) 129dB Frequency Range 200~5000 Hz Total Harmonic Wave Distortion ≤10># td### Reference Test Gain 56±5dB Input noise ≤20+3dB Sound amplification 80 The lightweight heavy duty aluminum means you don't have to worry about maintenance and ensures the Gateway Solid Surface Portable Ramp can be used in even the harshest of weather conditions * The lightweight heavy duty aluminum is more durable than wood allowing you to repeatedly use the ramp every day without worrying about deterioration * The one piece design of the Gateway Solid Surface Portable Ramp means no assembly is required * All you have to do is set it in place and it's ready for use * Slip resistant surface * Designed with a permanent extruded slip resistant surface the Gateway Solid Surface Portable Ramp makes sure that wheels don't lose traction removing the worry of wheels slipping on the ramp * Useable size: 10'x36 x3 5 V well rechargeable NiCad handles Lithium Ion Handle and PocketScope handles (only PocketScope handles require an adapter) * Colored LEDs indicate power to the unit and that handles are charging * Advanced circuitry for constant automatic safe charging and optimum lamp performance and life * Compact for convenience and mobility * Optional wall mount kit for permanently mounting to wall or cabinet * Optional specula tray conveniently stores swabs otoscope specula and curettes * Accepts 3